science - water

Class 6 - Science

Water

Q&A
Question:

How does heavy rain affect us?

Answer:

Heavy rains may cause:
1. A rise of water level in dams, rivers, lakes, etc.
2. Waterlogging and floods.
3. Floods cause damage to property, crops and animals.



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Questions and Answers


Water - Questions
1.

Why is ocean water not suitable for domestic use?


Answer
2.

How does the failure of rainfall affect people on the earth?


Answer
3.

There are 4 containers A, B, C and D with same amount of water in each. Answer the following based on them.
(a) Name the container in which water will evaporate faster than all others.
(b) Name the container in which water will evaporate very slowly.
Give reason for your answer.


Answer
4.

Which of the following statements are "true"?
(a) Water vapour is present in air only during the monsoon.
(b) Water evaporates into air from oceans, rivers and lakes but not from the soil.
(c) The process of water changing into its vapour is called evaporation.
(d) The evaporation of water takes place only in sunlight.
(e) Water vapour condenses to form tiny droplets of water in the upper layers of air where it is cooler.


Answer
5.

In which forms, water exists on the earth?


Answer
6.

During winters why do we see more fog in close areas where there are lots of .trees?


Answer
7.

What is meant by conservation of water? Suggest three methods to conserve water.


Answer
8.

What is rainwater harvesting? Describe the method of rainwater harvesting.


Answer
9.

What is transpiration?


Answer
10.

What is meant by the conservation of water?


Answer
11.

Why does the water split on the floor disappear after some time?


Answer
12.

Name two processes responsible for the formation of clouds.


Answer
13.

During winters why do we see more fog in close areas where there are lots of .trees?


Answer
14.

Write the sources of water on the earth.


Answer
15.

Mention two main functions of water for living organisms.


Answer
16.

Fill up the blanks in the following:
(a) The process of changing of water into its vapour is called_______________ .
(b) The process of changing water vapour into water is called_____________ .
(c) No rainfall for a year or more may lead to _____________ in that region.
(d) Excessive rains may cause__________ .


Answer
17.

How are clouds formed?


Answer
18.

How are the clouds formed?


Answer
19.

How does heavy rain affect us?


Answer
20.

To clean their spectacles, people often breathe out on glasses to make them wet. Explain why the glasses become wet?


Answer
21.

When does a drought occur?


Answer
22.

To clean their spectacles, people often breathe out on glasses to make them wet. Explain why the glasses become wet?


Answer
23.

Take out a cooled bottle of water from refrigerator and keep it on a table. After some time you notice a puddle of water around it. Why?


Answer
24.

Suppose you want to dry your school uniform quickly. Would spreading it near an anghiti or heater help you? If yes, how?


Answer
25.

State for each of the following whether it is due to evaporation or condensation:
(a) Water drops appear on the outer surface of a glass containing cold water.
(b) Steam rising from wet clothes while they are ironed.
(c) Fog appearing on a cold winter morning.
(d) Blackboard dries up after wiping it.
(e) Steam rising from a hot girdle when water is sprinkled on it.


Answer
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